diff --git a/client/components/cards/attachments.styl b/client/components/cards/attachments.styl
index ad28bb9dd..df293d87c 100644
--- a/client/components/cards/attachments.styl
+++ b/client/components/cards/attachments.styl
@@ -32,8 +32,8 @@
       position: relative
 
       .attachment-thumbnail-img
-        height: 100%
-        width: 100%
+        max-height: 100%
+        max-width: 100%
 
       .attachment-thumbnail-ext
         text-transform: uppercase